Somewhere I am happy of the interest for the matter.
Alternatives EmelFM, tree, Baobab are fine. They are alternatives only.
Using them for big directories will slow down your computer too. Hum... If you have so big directories, I think that you own a big computer which the processor will do that job easily !
2 or 3 seconds is faster than all other methods (right-click or opening a different tool). I just say :'it would be fine Rox-filer does it'. Ask them !

display 'sort by size' (rigtht-click in the window) sorts apparently repositories by size. I must check further.
It would be one step forward to my wish, not perfect, but better.Without having to use another tool.
Sure size shown beside would be the best.
I had a glance to rox-filer manual (in english, so be aware of my will)... I learned a lot of things. Unhappily, i didn't found my happiness.Last edited by Pelo on Sun 08 Sep 2013, 03:35; edited 1 time in total

Perhaps the metadata contained in the inodes includes the size of a folder or directory. I haven't been able to find out for sure. Here's a web page that looks like it might have a little bit of info. I found it by Googling "filesystem metadata".

Yeah, I doubt any file managers are showing dir sizes -it would simply slow every operation down -to a crawl sometimes. I have about 45GB of stuff under /usr. If I let du calculate the disk usage, it takes nearly ten minutes to complete. rox would take even more time because of updating the display. So, if this feature was built-in and I open rox in '/', then it would be at least ten minutes before I could navigate in to any directory there.

You can get a sense of how slow it might be by opening rox in /usr/bin or somewhere where there are thousands of files -or trun thumbnails on and navigate into a dir which contains hundreds of jpg images.

I agree that visualizing file/dir sizes is very useful. I use gdmap for the purpose as it is a pure gtk/gdk application. In fact, I use and old gtk-1.2 version which took me forever to find...

I like very much the pie-chart view which baobab seems to provide, but am unwilling to depend on 123 GNOME packages to have the feature...

There's also Worker (I found it yesterday, it's obviously inspired by Amiga's DirOpus), which can do it on demand.
It's enough to just select all directories (e.g. by pressing 'Invert selection' button) and then press 'Dirsize' button (see screenshot).
But yeah, it takes some time...

#!/bin/sh
# ~/my-applications/bin/totaldir.sh
####
# Unpacking -- If you have downloaded the zipped version, please unzip
# in folder /root/my-applications/bin.
#
# Installation -- Make a link from the /path/filename mentioned on line 2 to:
# /root/.config/rox.sourceforge.net/OpenWith/.inode_directory
#
# Usage --
# in GUI -- Just right-click on the directory and click "totaldir.sh"
# in CLI -- Type: totaldir.sh /directory/. # For ex.:
# totaldir.sh ~/my-documents/
# totaldir.sh /etc/ # Please use the slash at the end. OR:
# totaldir.sh . # (If you already are in the queried directory.)
#
# Note 1: "$@" and $PWD should indicate the same. (It's a built-in check.)
#
# Note 2: If you do not have the Proc2 font (which I'd recommend), I can
# suggest the Liberation Mono, DejaVu Mono or Monaco fonts.
#
# Note 3: Does not work on linked directories. The size indicated will be 0 (zero).
# Please use ROX's "target" to get to the folder, and then use totaldir.sh.
#
# (c) musher0, 2013-08-18.
####

Dirax fullfilled my wish, showing where are the fat files. It avoids me opening each directory. Musher0, once again, you answer the question !
But i go on exploring the matter.
Ytree and treesize seem efficient tools too. Is my english clear enough ?
Musher dit it ! in a few seconds. What an efficiency !

capture20761.png

Description

I am very pleased that several forgotten tools answer the question... excepted rox-Filer, which is a pity ! Go ahead, let us make treesize available.

Dirax fullfilled my wish, showing where are the fat files. It avoids me opening each directory. Musher0, once again, you answer the question !
But i go on exploring the matter.
Ytree and treesize seem efficient tools too. Is my english clear enough ?

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